def decode():
file = request.files['file_gambar']
img = numpy.fromstring(file.read(), numpy.uint8)
im = cv2.imdecode(img, cv2.IMREAD_UNCHANGED)
steg = LSBSteg(im)
pesan = unicode(steg.decode_text(), "utf8")
print(pesan)
return render_template("index.html", pesan=pesan)
def test():
if request.method == 'POST':
f = request.files['image']
f.save('prof_pic_encoded.png')
hash = request.form['hash'].strip()
img = LSBSteg(cv2.imread('prof_pic_encoded.png'))
txt = img.decode_text()
if 'facebook' not in txt or txt == hash:
return 'True'
else:
return 'False'
def forText():
#encoding
file = open('abc.txt', 'rb')
val = ''
val = val + file.read()
steg = LSBSteg(cv2.imread("download.jpeg"))
img_encoded = steg.encode_text(val)
cv2.imwrite("my_new_image.png", img_encoded)
#decoding
im = cv2.imread("my_new_image.png")
steg = LSBSteg(im)
print("Text value:", steg.decode_text())
def encode():
if request.method == 'POST':
f = request.files['image']
f.save('prof_pic_encoded.png')
hash = request.form['hash'].strip()
img = LSBSteg(cv2.imread('prof_pic_encoded.png'))
txt = img.decode_text()
if 'facebook' not in txt or txt == hash:
cv2.imwrite('prof_pic_secure.png', img.encode_text(hash))
with open('prof_pic_secure.png', 'rb') as image_file:
return base64.b64encode(image_file.read())
else:
return 'False'
from LSBSteg import LSBSteg
import cv2
#Text encoding:
#encoding
try:
steg = LSBSteg(cv2.imread("original.png"))
img_encoded = steg.encode_text("Embedding a secret message, Hello World!")
cv2.imwrite("encoded.png", img_encoded)
except: # catch *all* exceptions
exit(1)
#decoding
try:
im = cv2.imread("encoded.png")
steg = LSBSteg(im)
print("Text value:", steg.decode_text())
except: # catch *all exceptions
exit(2)
def lsbAlgoDefault(encrypt_decrypt, secret_string, encryption_technique):
# if (algo_technique == technique_options[0]):
# LSB:: Text Steganography
if (encrypt_decrypt == options[0]):
print("LSB:::Text::: Encrypt")
# Warning for secret string
if (len(secret_string) == 1):
print("Empty Secret:: Showing warning")
tk.messagebox.showwarning(
"Data Required", "Please enter secret data to be encoded")
return
# encoding
steg = LSBSteg(cv2.imread(image_path))
file_name = encryption_technique + "Plain.txt"
text_file = open(file_name, "w")
text_file.write(str(secret_string))
text_file.close()
if encryption_technique == "OTP":
enc = OneTimePad(secret_string, "Plain")
enc_string = enc.run(encrypt_decrypt)
elif encryption_technique == "RSA":
enc = RSACipher(secret_string, "Plain")
enc_string = enc.run(encrypt_decrypt)
elif encryption_technique == "AES":
enc = AESCipher(secret_string, "Plain")
enc_string = enc.run(encrypt_decrypt)
elif encryption_technique == "DES":
enc = DESCipher(secret_string, "Plain")
enc_string = enc.run(encrypt_decrypt)
img_encoded = steg.encode_text(enc_string)
cv2.imwrite("secret/secret.png", img_encoded)
displayImage("secret/secret.png")
img1 = cv2.imread(image_path)
img2 = cv2.imread("secret/secret.png")
imgA = cv2.cvtColor(img1, cv2.COLOR_BGR2GRAY)
imgB = cv2.cvtColor(img2, cv2.COLOR_BGR2GRAY)
compare_images(imgA, imgB, "LSB", encryption_technique)
else:
print("LSB:::Text::: Decrypt")
# decoding
print(image_path)
im = cv2.imread(image_path)
steg = LSBSteg(im)
secret = steg.decode_text()
print("Secret is", secret)
if encryption_technique == "OTP":
dec = OneTimePad(secret, "Plain")
secret_message = dec.run(encrypt_decrypt)
elif encryption_technique == "RSA":
dec = RSACipher(secret, "Plain")
secret_message = dec.run(encrypt_decrypt)
elif encryption_technique == "AES":
dec = AESCipher(secret, "Plain")
secret_message = dec.run(encrypt_decrypt)
elif encryption_technique == "DES":
dec = DESCipher(secret, "Plain")
secret_message = dec.run(encrypt_decrypt)
filename = encryption_technique + "Plain.txt"
key_file = open(filename, "r")
original_message = key_file.readline()
key_file.close()
precentage_comparison = compare_strings(original_message,
secret_message)
print("The strings are equal by", precentage_comparison, "parts")
addtofile("LSB", encryption_technique[:3], precentage_comparison)
#dec = OneTimePad(secret, "Plain")
#secret_message = dec.run(encrypt_decrypt)
displaySecret(secret_message)
print("Text value:", secret_message)
